Alert archive / Michigan / Special Weather Statements in 2012
Special Weather Statement, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this special weather statement at Jul 18, 2012, 1:28 AM EDT for Gratiot County, Montcalm County, Michigan. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 18, 2012, 1:28 AM EDT (05:28 UTC)
- Expired
- Jul 18, 2012, 2:30 AM EDT
- In force
- 62 min
- Issued by
- NWS Grand Rapids, MI
Counties Gratiot County, MI, Montcalm County, MI
The radar
The Grand Rapids radar (KGRR), 66 km from the middle of the area, began a volume at 05:29 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 5.5 hours before the alert went out and 145 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 267 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 2405 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Rapids, MI wrote its last area forecast discussion before this special weather statement went out at Jul 18, 12:36 AM EDT, 52 minutes earlier.
Area forecast discussion, Jul 18, 12:36 AM EDT, 52 minutes before
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</html>Hazardous weather outlook, Jul 17, 11:00 AM EDT, 14 hours 28 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1100 AM EDT TUE JUL 17 2012 MIZ037>040-043>046-050>052-056>059-064>067-071>074-180845- MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON- MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON- INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON- 1100 AM EDT TUE JUL 17 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...THIS AFTERNOON AND TONIGHT THE HEAT INDEX WILL BE 100 TO 110 DEGREES THIS AFTERNOON AND THE FIRE DANGER WILL BE ELEVATED. SCATTERED THUNDERSTORMS WILL MOVE INTO CENTRAL LOWER MICHIGAN THIS EVENING. THE STRONGEST STORMS MAY HAVE DAMAGING WINDS AND HAIL TO ONE INCH IN DIAMETER. THE BEST CHANCE OF SEVERE WEATHER WILL BE EAST OF A LINE BETWEEN MOUNT PLEASANT AND LANSING. STORM MOTION WILL BE SOUTHEAST AT 35 MPH. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY SCATTERED THUNDERSTORMS WILL CONTINUE INTO WEDNESDAY AFTERNOON BUT BY THEN THE STORMS SHOULD FOR THE MOST PART BE SOUTH OF INTERSTATE 94. THE STRONGEST STORMS MAY HAVE GUSTY WINDS AND SMALL HAIL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS POSSIBLE THIS EVENING. LMZ844>849-180845- ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI- HOLLAND TO GRAND HAVEN MI-GRAND HAVEN TO WHITEHALL MI- WHITEHALL TO PENTWATER MI-PENTWATER TO MANISTEE MI- 1100 AM EDT TUE JUL 17 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...THIS AFTERNOON AND TONIGHT WAVES OVER 4 FEET FROM MUSKEGON TO PENTWATER WILL MEAN A MODERATE THREAT THAT SWIMMING WILL BE HAZARDOUS. SCATTERED THUNDERSTORMS WILL MOVE INTO THE NEAR SHORE THIS EVENING. SOME OF THESE STORMS WILL HAVE FREQUENT LIGHTNING...GUSTY WINDS AND POSSIBLY HAIL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY SCATTERED THUNDERSTORMS WILL CONTINUE INTO MIDDAY WEDNESDAY. GUSTY WINDS...FREQUENT LIGHTNING AND SMALL HAIL ARE POSSIBLE WITH THE STORMS. OSTUNO WDM
In the hours before
Local storm report, Jul 17, 9:24 PM EDT, 4 hours 4 minutes before
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</html>Local storm report, Jul 17, 9:51 PM EDT, 3 hours 37 minutes before
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</html>Local storm report, Jul 17, 10:45 PM EDT, 2 hours 43 minutes before
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</html>Special weather statement, Jul 18, 1:18 AM EDT, 10 minutes before
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</html>Special weather statement, Jul 18, 1:28 AM EDT, 0 minutes before
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</html>The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 8:01 PM EDT | Severe Thunderstorm Warning | GRR | Mecosta | 32 min |
| Jul 17, 9:06 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot, Montcalm | 52 min |
| Jul 18, 1:18 AM EDT | Special Weather Statement | GRR | Mason, Oceana | 57 min |
| Jul 18, 3:47 AM EDT | Special Weather Statement | GRR | Mason, Oceana | 58 min |
| Jul 18, 6:01 AM EDT | Special Weather Statement | GRR | Clinton, Eaton, Ingham | 89 min |
Nearby
Special Weather Statements in Michigan, 2012Every special weather statement in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.